Improvement in fire-box attachments for farm-engines



H. GILLETT. Fire-Box Attachment for Farm-Engines.

t, No 222,270. Patented Dec. 2 1879.

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pf the straw upon the thrashed by steam-power.

.HARRISON GILLETT, or LAKE CITY, MINNESOTA, ASSIGNOR or ONRHALF OF HIS RIGHT TO WILLIAM B. LUTZ, OF SAME PLACE.

IMPROVEMENT IN FIRE-BOX ATTACHMENTS FOR FARM-ENGINES.

Specification forming part of Letters Patent No. 222,270, dated December 2, 1879; application filed September 3, 1879.

To all whom it may concern:

Be it known that I, HARRISON GILLETT, of Lake City, in the county of Wabasha and State of Minnesota, have invented certain new and useful Improvements in Fire-Box Attachments for Farm-Engines, of which the following is a specification.

My invention relates to a portable fire-box for utilizing straw, hay, shavings, and other light combustible materials as fuel.

' It is intended especially for use in connection with farm-engines, and to enable the burning spot when grain is It consists in an inclosed box or furnace, provided with a flue leading from its upper portion and adapted for connection with a boilerfurnace, and having at a suitable level a horizontal series of wide rotatable grate-bars provided with projecting handles, an outwardlyprojecting feed chute leading into the box above the grate-bars, and a water-chamber below said grate-bars. The flue may be shaped to fit into the door of any ordinary boiler-furnace. The outwardly-projectingfeed-ch ute enables the straw to be easily fed, while, by means of the rotatable grate-bars, the cinders and ashes are readily broken up and prevented from becoming banked, and the water in the chamber below the grate-bars catches and. condenses the light ashes, which would otherwise clog up the box and fines.

In the accompanying drawings, Figure 1 is a longitudinal vertical section of my improved fire-box connected to a farm-engine, Fig. 2 is a detached View of one of the grate-bars and a portion of the box-wall.

' The letter A indicates the fire-box, and B the flue leading into the furnace O of the farmengine D through the doorway of said furnace.

The letter E designates one of the rotatable grate-bars, having journals 6 0 supported on suitable bearings projecting from the walls,

the journal 6 at the front being prolonged through the wall, and provided with ahanclle, f, and two short studs, h h, projecting at right angles. Just below the aperture through which the front journal-extension, 6, projects is arranged a socket, 2 adapted to receive the studs h h and prevent the grate-bar from rotating. The aperture is large enough, preferably elongated vertically, to permit the front journal of the grate-bar to be lifteda sufficient distance to disen gage the studs from the socket, when desired, in order to rotatethebar. When the stud h is in the socket the grate-bar will be held in a horizontal plane to support the fuel; but when the stud h is engaged in the socket the bar is held with its end edges vertical, so that the ashes and debris can drop through into the water-chamber. The grate-bars may be, of course, rocked or shaken only sufficien tly to loosen up the fuel, and then secured again horizontally.

The letter F indicates the water-chamber, the function of which has been already described; and G designates a water pocket or funnel, secured to the outer surfaceof the boxwall, and having an outlet, 9, through said wall, by means of which water may be supplied to the water-chamber.

The feed-chute H leads into the box above the grate-bars, and may extend outward any desired distance to enable the fuel to be fed through it safely and conveniently, said tube being provided with a suitable door at its outer end. i

The water-chamber has arranged within it, in front of the ash-door j, an incline, it, over which the ashes may be raked out through said door.

A draft-opening, provided with a suitable door, Z, is arranged in the front W'all-of the box, and by opening or closing this door and.

the ash-door j the activity of combustion of the fuel may be modified as desired. Through the upper door, I, also the fire may be watched.

My fire-box may be used in connection with any kind of boiler-furnace, and the manner of using it is obvious without particular explanation. it

What I claim is- 1. The inclosed box provided with a flue leading from its upper portion and adapted for connection with a boiler-furnace, and having at a suitable level a horizontal series of wide rotatable grate-bars providedwith projectin g handle or handles, an outwardly-pro @EFEE.

the grate-bars, havin g arranged within it an incline, 7c, leading from the bottom thereof to the doorway, substantially as and for the purpose set forth.

In testimony that I c aim the foregoing I have hereunto set my hand in the presence of the subscribing witnesses.

HARRISON GILLETT.

Witnesses GEo. L. MATCHAN, H. D. STOCKER. 

